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February 25, 2010, 13:25 |
stressComponents utility in LES calculations
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#1 |
Senior Member
Vesselin Krastev
Join Date: Jan 2010
Location: University of Tor Vergata, Rome
Posts: 368
Rep Power: 20 |
Hi everybody,
I'm working on a 2d LES simulation on a channel flow. The model I use is the oneEqEddy, with the same settings of the pitzDaily LES pisoFoam tutorial. So, the matter I wish to investigate is about the meaning of the stressComponents utility output in a case such this: are these components referred to the Smagorinski stress tensor (TAUsgs)? If they not, what actually do they represent in a LES simulation? Thank you in advance |
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February 25, 2010, 13:44 |
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#2 |
Senior Member
Vesselin Krastev
Join Date: Jan 2010
Location: University of Tor Vergata, Rome
Posts: 368
Rep Power: 20 |
Any replies?
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February 26, 2010, 05:19 |
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#3 |
Senior Member
Vesselin Krastev
Join Date: Jan 2010
Location: University of Tor Vergata, Rome
Posts: 368
Rep Power: 20 |
??????????
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April 12, 2011, 13:57 |
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#4 |
Member
David Aljure
Join Date: Mar 2011
Location: CTTC Universidad Politécnica de Catalunya. Spain
Posts: 38
Rep Power: 15 |
In its source code, stressComponents is defined as:
laminarTransport.nu()*2*dev(symm(fvc::grad(U))) I think it's not related to sgs stresses, its the deviatoric stress components. (1 year late :^P) |
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